Description
Fossil Identification
This very rare 8-inch Sonninia adicar fossil ammonite is identified from the Laeviuscula Zone of the Lower Inferior Oolite, Lower Bajocian, within the Jurassic. Sonninia is an ammonite genus associated with Jurassic marine deposits, making this specimen a compelling addition for collectors interested in ammonites, Jurassic palaeontology and the historical geology of the United Kingdom.
The specimen is associated with Stoke Knap, Dorset, United Kingdom. Its stated identification, geological stage and stratigraphic placement provide useful context for displaying and studying this example as part of a focused fossil, ammonite or Jurassic collection.
Geological Context
The Lower Bajocian forms part of the Middle Jurassic, a period well known for diverse marine ecosystems and widespread ammonite faunas. The Lower Inferior Oolite represents a significant Jurassic stratigraphic unit, while the Laeviuscula Zone provides a more specific biostratigraphic context for the specimen. In fossil collecting, zone-level information is especially valuable because it connects an individual fossil with a defined interval in the geological record.
Ammonites are extinct marine cephalopods recognised for their coiled shells and importance in Jurassic biostratigraphy. Their distribution through successive rock layers allows identified specimens to contribute to the understanding and study of geological time, marine environments and fossil succession. This Sonninia adicar example is particularly suited to collectors seeking a distinctive Jurassic ammonite with a named zone and stage association.
Collection and Display
From the Alice Purnell Collection
With its large 8-inch format and specified Lower Bajocian context, this fossil is suitable for a dedicated ammonite display, geological cabinet, educational collection or natural-history presentation. It can appeal to collectors of Jurassic fossils, Dorset material, stratigraphically documented ammonites and unusual palaeontological specimens.
The photograph shows the actual specimen you will receive.
Sizing Information
The product name identifies this ammonite as 8 inches in size. Full sizing is shown in the photographs. Please use the images to assess the overall scale, presentation and appearance of the individual specimen supplied with this listing.
Certificate of Authenticity
This Fossil is a genuine specimen and Includes a fully hand-signed Premium Certificate of Authenticity.
The certificate accompanies the specimen and adds formal documentation for collectors, fossil enthusiasts and anyone building a recorded geological collection. The combination of the named identification, Lower Bajocian age, Lower Inferior Oolite placement, Laeviuscula Zone association and Stoke Knap, Dorset locality makes this a well-contextualised example for display or study.
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